The ability to create an account for each client so that I can track their progress at all times, even if they have changed jobs or moved cities! There is no way of knowing where your customers are without using this software - it's great because you know exactly how many people use what features/products in which locations every day. It would be nice if there was more integration with other platforms like Salesforce as well but overall its been very helpful tracking my customer base across multiple channels such as social media posts, website visits etc.. We've also seen big improvements in our conversion rates since we started implementing futurefuel into some campaigns. Currently nothing however once again I think that could definitely improve upon certain functions within FUEL itself (such as creating new accounts). If anyone needs assistance setting up any type of marketing campaign then do not hesitate contacting them right away! They will.